diffusion diffusion  /dɪ ˈfju ʒən/


  1. (n) (physics) the process in which there is movement of a substance from an area of high concentration of that substance to an area of lower concentration
  2. (n) the spread of social institutions (and myths and skills) from one society to another
  3. (n) the property of being diffused or dispersed
  4. (n) the act of dispersing or diffusing something


  1. Against direct radiation itself, the porous diffusion board gives no protection.
  2. Its rate of diffusion through rubber is about 15 times that of air.
  3. At Columbia University, he worked on the gaseous-diffusion method for separating U-235 the process now used exclusively at Oak Ridge.


  1. Secretary Moniz questioned about Paducah's Gaseous Diffusion Plant

    New details have come to light on the future of Paducah's gaseous diffusion plant. The new Secretary of the Department of Energy says his office will review the proposals they have received for the facility.
    on June 14, 2013     Source: WPSD Local 6 Paducah

  2. Jason Wu Hired to Give Hugo Boss’s Womenswear a Makeover

    Jason Wu has signed on as the new creative director of Hugo Boss's womenswear line, according to a press release from the label. This was rather unexpected: Boss hasn't employed big-name designers before, and it wasn't known that Wu — who has his own eponymous ready-to-wear, shoe, accessories, and diffusion ... More »
    on June 10, 2013     Source: New York Magazine

  3. Top Quality Cu Diffusion Barriers from Picosun in the ENIAC JU Project ESiP

    ESPOO, Finland, June 9, 2013 /PRNewswire/ -- Picosun Oy, leading Atomic Layer Deposition (ALD) equipment manufacturer, reports excellent process results for copper diffusion barrier deposition. ALD materials ...
    on June 10, 2013     Source: PR Newswire via Yahoo! Finance


  1. "The diffusion of power carries with it a diffusion of accountability," wrote chief Justice John Roberts.
    on Jun 29, 2010 By: John Roberts Source: InformationWeek

  2. "They can train themselves over the internet. They never have to necessarily go to the training camp or speak with anybody else and that diffusion of a combination of hatred and technical skills in things like bomb-making is a dangerous...
    on Oct 17, 2006 By: Michael Chertoff Source: Wired News

  3. "The quickest way of lowering the cost of many renewable options is to scale up their rate of deployment and diffusion in developing countries," Environment Minister Jairam Ramesh said summarising the proceedings of the conference.
    on Oct 23, 2009 By: Jairam Ramesh Source: Press Trust of India

Word of the Day
languish languish
/ˈlæŋɡ wɪʃ /